| 1. | Elastic mid - strength rock wool board : used for heat preservation , fireproofing and sound absorption for the building wall / roof , such as curtain wall , inner wall partition and elevator hoistway , etc
有弹性，中等强度岩棉板：适用于建筑墙体/屋顶保温、防火、吸音，如幕墙、内墙隔断、电梯井等。 |
